关于一个数组的有关问题，重新组合

<br />$arr=array<br />(<br />    [0] => Array<br />        (<br />            [caseid] => 31<br />            [name] => 张三<br />            [shijian] => Array<br />                (<br />                    [0] => 8:00<br />                    [1] => 18:00<br />                )<br /><br />        )<br /><br />    [1] => Array<br />        (<br />            [caseid] => 32<br />            [name] => 李四<br />            [shijian] => Array<br />                (<br />                    [0] => 8:00<br />                    [1] => 12:00<br />                    [2] => 18:00<br />                )<br /><br />        )<br /><br />    [2] => Array<br />        (<br />            [caseid] => 33<br />            [name] => 王五<br />            [shijian] => Array<br />                (<br />                    [0] => 8:00<br />                    [1] => 12:00<br />                    [2] => 18:00<br />                )<br /><br />        )<br /><br />)<br />

<br>Array<br>(<br>    [0] =&gt; Array<br>        (<br>            [time] =&gt; 8:00<br>            [detail] =&gt; Array<br>                (<br>                    [0] =&gt; Array<br>                        (<br>                            [caseid] =&gt; 31<br>                            [casename] =&gt; 张三<br>                            <br>                        )<br>					[1] =&gt; Array<br>						(<br>							[caseid] =&gt; 32<br>							[casename] =&gt;李四<br><br>						)<br>					[2] =&gt; Array<br>						(<br>							[caseid] =&gt; 33<br>							[casename] =&gt; 王五<br><br>						)<br><br>                )<br><br>        )<br><br>    [1] =&gt; Array<br>        (<br>            [time] =&gt; 12:00<br>            [detail] =&gt; Array<br>                (<br>                    [0] =&gt; Array<br>                        (<div class="clear"></div>